Details

Created: 26 February 2014

Several new items have been added to the Texas Instruments section of the Library, courtesy of Palmer Hanson.

Details

Created: 08 January 2014

I came across to rare Casio programmables on eBay last month: the FC-200 is a financial calculator, whereas the FM-300 is an altogether unique, non-scientific formula programmable.

Details

Created: 11 September 2013

It has been a while since I last bought a brand new calculator, but the HP-39gs was available on Amazon.ca at a deep discount.

Details

Created: 07 September 2013

A few days ago, I enabled Joomla's built-in cache mechanism to speed up this Web site.

Unfortunately, Joomla's cache feature is a tad too aggressive; it was also caching the calculator detail page. Since the content of this page is dynamically generated, caching it is not such a good idea. Basically, it meant that once you looked at a calculator page, the page remained "stuck" on that calculator, refusing to show details of any other machine until the cache expired.

This problem is now fixed, and I was able to keep the cache feature running, thanks to an excellent Joomla plugin, CacheControl.

Details

Created: 03 September 2013

Updated the page on the Facit C1-13 with a brief repair story and a detailed example of Töpler's square root algorithm.